AHG

[Brtnboarder495]

Two main questions ...

1.) When using AHG, it's most efficient to heartline one segment (or main part of a track) at a time, correct?

2.) How do I allow AHG to accomodate negative G forces, because when the track segment is black, it simply "flips" it using banking to avoid the negative G's. I obviously don't want the track to be flipped ... do I change the color? And if so what color do I change it to, and if not how do I go about doing so.

P.S. I'm on an awesome PC now, so expect many more questions reguarding Elementary and Purg too [|)]

Thank you!

1. I prefer to heartline the track as a whole, it generally creates a better flow between elements. It's definitely not a good idea to split it up where there's any banking change, it'll most definitely create a bump of some sort when you join up the two sections. I sometimes heartline individual elements just to get a feel of it, and to see if anything needs changing before I continue.

2. Make sure you've coloured all of the track's spine (main track colour) with negative G's pure black with individual colours checked.

[Brtnboarder495]

2. Make sure you've coloured all of the track's spine (main track colour) with negative G's pure black with individual colours checked.

Thanks, can you be more clear on the coloring though?

Make sure you've got all the segments with negative G's selected, and colour the 'Main Track Color' Pure Black, (red=0, green=0, blue=0) and check the box that says 'Individual Colors' That's all you should need to do to make sure that it dosen't flip the track.

[Brtnboarder495]

Ahh okay thanks ... everything is working almost perfect now, except that the heartlining is too extreme, the AHG heartlined the track too much. What determines how "extreme" the heartlining is?

What do you mean? Are the transitions too fast? Or have you used too greater heartline distance? A list of the NL heartline distances is at the top right of the AHG if that's what the problem is.

[hyyyper]

i think brtn mean that the banking is to great

If the track banks too much, then you are using incorrect speeds. If the transition happens too fast then you need to use a higher filter or change the track. If you use a small lead-in to a curve or element, it will be a quick banking change no matter what setting in the AHG you use (while keeping accuracy).

[Brtnboarder495]

Gotcha, okay well everythign is working with AHG now ... but vertical loops become deformed, how do I fix that?

It's normal for them to become 'deformed'. Because of the way the AHG works, loops on sitdown coasters will end up 2x the heartline distance higher, and 2x the heartline distance lower on inverts. It's just one of those things you have to build for with the AHG.

[Brtnboarder495]

Great ... okay Thanks.

*Looks at Purg* [B)]

[yoshifreak]

I've got a question on the AHG, I've been trying to AHG a rocket coaster Like Stormrunner, but It always screws up the tower, any suggestions?

http://www.coastercrazy.com/forum/topic ... hichpage=2

Or you could read through my mini tutorial on how to make a heartline roll then apply what I said and what you did there to other elements - mostly the entire track.

I like to use the other colors, the red and green to ensure the smoothest possible transition from AHG banking to custom banking. Read through that thread, its everything you should need.

Originally posted by yoshifreak

I've got a question on the AHG, I've been trying to AHG a rocket coaster Like Stormrunner, but It always screws up the tower, any suggestions?

What part is 'messing up'? You can't have track verticies with a slope of 90 degrees when using the ahg. Trying using a slope of 89.8 or something.

[yoshifreak]

How much of a filter Should I use if I was doing a tower?

Its hard to say, I would just experiment with it to get the best result.

Just go with 100 as a general number. You have to bank it yourself, making the entire top and turning thing black (put those red green things in too). Also, you can't have 90*, slope at that point in terms of math is undefined.

[yoshifreak]

It didn't work the twist was way off[confused]

Throw up a picture from the editor of what you are starting with.

[Brtnboarder495]

Ahhhh this is giving me headaches ... I'm quitting for now [:D].

BTW, Real, Wingover, Tyler, do you use Elementary or Purg?

Real-Handbuilt, smoother, AHG

Wingover-Elementary, elements rotated in purg, AHG

Tyler-Same as above.

Me-Same as above.

EDIT:Spelling

Yup, Im still hand buildin. Smoothing with the smoother and then throwing it through the AHG.

I use the elementary for "elementary" elements like helicies, loops and such. I also use the Purg to rotate but the bulk (like 80%) of my rides are handbuilt.

[jayman]

oh , wow now i don't feel guilty.. i don't use the elementary though.. i thought i was using "tools" because i used the ahg on my last ride, but i guess i'm a hand builder.. i don't use the elementary or the pug, but i use the tool box to rotate my tracks..

[Brtnboarder495]

Okay thanks.

In theory then, wouldn't AHG make a track smoother because it "fixes" the banking and the track around the heartline, which remains constant?

Yes and no. In some cases it will smooth out a very small bump or jerk but in more cases than not since the heartline is making the track move laterally you can end up with a worse output than before.

Plus, at least for me, its a balancing act to get all elements to behave like I want them too in my head with specific numbers for each.